Functional Information from GO Data
| Chain | GOid | namespace | contents |
| A | 0004252 | molecular_function | serine-type endopeptidase activity |
| A | 0006958 | biological_process | complement activation, classical pathway |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 6 |
| Details | binding site for residue CA A 300 |
| Chain | Residue |
| A | GLU226 |
| A | ASP236 |
| A | ASP273 |
| A | SER275 |
| A | HOH453 |
| A | HOH472 |
| site_id | AC2 |
| Number of Residues | 7 |
| Details | binding site for residue NA A 301 |
| Chain | Residue |
| A | TYR193 |
| A | ARG195 |
| A | TYR197 |
| A | ARG279 |
| A | SER190 |
| A | LEU191 |
| A | GLU192 |
Functional Information from SwissProt/UniProt
| Chain | Residue | Details |
| A | SER189 | |
| Chain | Residue | Details |
| A | ASN204 | |
